Empathy List Archives

EM

Edgardo Molina

Mon, Jul 2, 2012 4:58 AM

Dear John,

Totally agree with your point of view. Thank you for the links.
Information quite impressive and interesting.

Bringing one HP5065a back from death... It reminds me about the times
I restored my wristwatches to mint condition, even though they looked
like what the cat brought in, at the time I found them living in
oblivion. When something is worth restoring, it can certainly be
painful in the process but achievable with time and patience.

You have a nice week.

Regards,

Edgardo Molina
XE1XUS

On Jul 1, 2012, at 4:18 PM, John Miles wrote:

Shhh, I was hoping he'd succeed in his apparent attempt to drive 5065A
prices down, so I can round up a few more for myself!

$78 is a great price for an LPRO-101, certainly, but you can't
compare them
to the HP rubidiums. The latter's specs (as well as its "secs") are
vastly
better.

Edgardo, I don't know if you've seen the relative performance that
can be
expected from various Rb standards, but if not, check out
http://www.ke5fx.com/rb.htm and N8UR's plots at
http://febo.com/pages/oscillators/rubes/ (which were taken with a
5065A as
the reference.) This is why it's worth the effort to bring an HP
5065A back
from the dead, even if the cost is higher than an LPRO or PRS10.

The real problem with the 5065A is that it represents the end of the
line
for most noncommercial users. There are no further upgrade
possibilities
for taus out to several hours -- not even the best commercial cesium
standards -- until you get into masers.

-- john, KE5FX
www.miles.io

Chris,

The HP 5065A is one of the best Rb ever made.

/tvb (iPhone4)

On Jul 1, 2012, at 21:12, Chris Albertson albertson.chris@gmail.com

wrote:

On Sun, Jul 1, 2012 at 8:39 AM, Edgardo Molina xe1xus@amsat.org
wrote:

Dear Chris,

One of my needs: A dependable Rb source.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Dear John, Totally agree with your point of view. Thank you for the links. Information quite impressive and interesting. Bringing one HP5065a back from death... It reminds me about the times I restored my wristwatches to mint condition, even though they looked like what the cat brought in, at the time I found them living in oblivion. When something is worth restoring, it can certainly be painful in the process but achievable with time and patience. You have a nice week. Regards, Edgardo Molina XE1XUS On Jul 1, 2012, at 4:18 PM, John Miles wrote: > Shhh, I was hoping he'd succeed in his apparent attempt to drive 5065A > prices down, so I can round up a few more for myself! > > $78 is a great price for an LPRO-101, certainly, but you can't > compare them > to the HP rubidiums. The latter's specs (as well as its "secs") are > vastly > better. > > Edgardo, I don't know if you've seen the relative performance that > can be > expected from various Rb standards, but if not, check out > http://www.ke5fx.com/rb.htm and N8UR's plots at > http://febo.com/pages/oscillators/rubes/ (which were taken with a > 5065A as > the reference.) This is why it's worth the effort to bring an HP > 5065A back > from the dead, even if the cost is higher than an LPRO or PRS10. > > The real problem with the 5065A is that it represents the end of the > line > for most noncommercial users. There are no further upgrade > possibilities > for taus out to several hours -- not even the best commercial cesium > standards -- until you get into masers. > > -- john, KE5FX > www.miles.io > > >> Chris, >> >> The HP 5065A is one of the best Rb ever made. >> >> /tvb (iPhone4) >> >> On Jul 1, 2012, at 21:12, Chris Albertson <albertson.chris@gmail.com> > wrote: >> >>> On Sun, Jul 1, 2012 at 8:39 AM, Edgardo Molina <xe1xus@amsat.org> >>> wrote: >>> >>>> Dear Chris, >>>> >>>> One of my needs: A dependable Rb source. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

EM

Edgardo Molina

Mon, Jul 2, 2012 5:04 AM

Dear Chris,

Thanks for the advise. It is always nice to have different opinions
and points of view.

I have heard about the dependability of Efratom products while doing
my research homework. An Rb oscillator like that surely could be a
good bet considering your vision of the plural concept of oscillator.
I agree. As in many of my other scientific/tecnical projects, I
usually do not feel that all of my bases are covered with only one
brand or example of any of the items that I so much enjoy as hobbies.

I will seriously consider your kind advise and look forward meeting
you whenever visiting Rancho Palos Verdes, as I usually do, in the
future.

Kind regards,

Edgardo Molina
XE1XUS

On Jul 1, 2012, at 2:12 PM, Chris Albertson wrote:

On Sun, Jul 1, 2012 at 8:39 AM, Edgardo Molina xe1xus@amsat.org
wrote:

Dear Chris,

One of my needs: A dependable Rb source. HP appeals to me as most
of my
electronics lab equipment comes from that house. I have seen
numerous other
Rb sources here and there but would like to afford an HP unit. I
know I can
go to the party driving either a 60's VW beattle or driving a 60's
Ford
Mustang. Both of them can get me there. Still personally, I rather
drive
the V8 beast. The robustness, mechanics, physics package
characteristics
and form factor, homogeneous with my HP quartz frequency standards
and
frequency counters is what catches my eye when looking at that
model. Let's
say 50% looks and desire and 50% for what it is. It will be used in
my time
and frequency lab. Hobby use, a learning tool, an object of desire...

OK that is a reasonable use, you just want one. But the Rb units
on
eBay are much more resent manufacture, better secs and well under
$100.
But no "HP" name plate and you must apply the DC power. They score
near
zero in "looks" as they are just the bare oscillator.

Look at this eBay number: 300719752578 It is a very good unit from a
seller many people know. The specs are very good.

I bought one like this back when the price was $39 shipped.
300606871861
Mine is preforming very well. It provides a reference for a a few HP
Universal Counters.

But really if you are setting up a lab at home the first thing you
should
buy is the Thunderbolt and a good antenna. You will need one to
calibrate
your Rubidium oscillators. (yes "oscillators" with a pleural "s".
how
else to cross check them if you have only one?)

Chris Albertson
Redondo Beach, California

time-nuts mailing list -- time-nuts@febo.com
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and follow the instructions there.

Dear Chris, Thanks for the advise. It is always nice to have different opinions and points of view. I have heard about the dependability of Efratom products while doing my research homework. An Rb oscillator like that surely could be a good bet considering your vision of the plural concept of oscillator. I agree. As in many of my other scientific/tecnical projects, I usually do not feel that all of my bases are covered with only one brand or example of any of the items that I so much enjoy as hobbies. I will seriously consider your kind advise and look forward meeting you whenever visiting Rancho Palos Verdes, as I usually do, in the future. Kind regards, Edgardo Molina XE1XUS On Jul 1, 2012, at 2:12 PM, Chris Albertson wrote: > On Sun, Jul 1, 2012 at 8:39 AM, Edgardo Molina <xe1xus@amsat.org> > wrote: > >> Dear Chris, >> >> One of my needs: A dependable Rb source. HP appeals to me as most >> of my >> electronics lab equipment comes from that house. I have seen >> numerous other >> Rb sources here and there but would like to afford an HP unit. I >> know I can >> go to the party driving either a 60's VW beattle or driving a 60's >> Ford >> Mustang. Both of them can get me there. Still personally, I rather >> drive >> the V8 beast. The robustness, mechanics, physics package >> characteristics >> and form factor, homogeneous with my HP quartz frequency standards >> and >> frequency counters is what catches my eye when looking at that >> model. Let's >> say 50% looks and desire and 50% for what it is. It will be used in >> my time >> and frequency lab. Hobby use, a learning tool, an object of desire... >> >> > OK that is a reasonable use, you just want one. But the Rb units > on > eBay are much more resent manufacture, better secs and well under > $100. > But no "HP" name plate and you must apply the DC power. They score > near > zero in "looks" as they are just the bare oscillator. > > > Look at this eBay number: 300719752578 It is a very good unit from a > seller many people know. The specs are very good. > > I bought one like this back when the price was $39 shipped. > 300606871861 > Mine is preforming very well. It provides a reference for a a few HP > Universal Counters. > > But really if you are setting up a lab at home the first thing you > should > buy is the Thunderbolt and a good antenna. You will need one to > calibrate > your Rubidium oscillators. (yes "oscillators" with a pleural "s". > how > else to cross check them if you have only one?) > > > > Chris Albertson > Redondo Beach, California > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

JL

Jim Lux

Mon, Jul 2, 2012 1:02 PM

On 7/1/12 2:43 PM, bg@lysator.liu.se wrote:

Tom,

Chris,

The HP 5065A is one of the best Rb ever made.

/tvb (iPhone4)

Have you or any other list member had the opportunity to take measurements
on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)?

 http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf

--

are those the ones in GPS satellites? (for instance?)

On 7/1/12 2:43 PM, bg@lysator.liu.se wrote: > Tom, > >> Chris, >> >> The HP 5065A is one of the best Rb ever made. >> >> /tvb (iPhone4) > > Have you or any other list member had the opportunity to take measurements > on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)? > > http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf > > -- are those the ones in GPS satellites? (for instance?)

DJ

David J Taylor

Mon, Jul 2, 2012 1:12 PM

-----Original Message-----
From: Jim Lux
Sent: Monday, July 02, 2012 2:02 PM
[]

 http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf

--

are those the ones in GPS satellites? (for instance?)

---====================

Jim,

The Galileo satellites have both rubidium atomic clocks and the more precise
hydrogen maser units - see:

http://www.bbc.co.uk/news/science-environment-17755205

Cheers,
David

SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk

-----Original Message----- From: Jim Lux Sent: Monday, July 02, 2012 2:02 PM [] > http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf > > -- are those the ones in GPS satellites? (for instance?) ===================================================== Jim, The Galileo satellites have both rubidium atomic clocks and the more precise hydrogen maser units - see: http://www.bbc.co.uk/news/science-environment-17755205 Cheers, David -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-taylor@blueyonder.co.uk

BC

Bob Camp

Mon, Jul 2, 2012 7:48 PM

Hi

Yes, I have poked at the early ones (1980's). They are the only thing I have seen that will beat the HP 5065. There is also a lot of published data on them.

Bob

On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote:

Tom,

Chris,

The HP 5065A is one of the best Rb ever made.

/tvb (iPhone4)

Have you or any other list member had the opportunity to take measurements
on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)?

http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf

--

Björn

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi Yes, I have poked at the early ones (1980's). They are the only thing I have seen that will beat the HP 5065. There is also a lot of published data on them. Bob On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote: > Tom, > >> Chris, >> >> The HP 5065A is one of the best Rb ever made. >> >> /tvb (iPhone4) > > Have you or any other list member had the opportunity to take measurements > on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)? > > http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf > > -- > > Björn > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

RA

Robert Atkinson

Mon, Jul 2, 2012 8:45 PM

How do the older Efratom FRK series fair compared to the 5065A?

Robert G8RPI.

From: Bob Camp lists@rtty.us
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Monday, 2 July 2012, 20:48
Subject: Re: [time-nuts] HP-5065a advise and purchase decision

Hi

Yes, I have poked at the early ones (1980's). They are the only thing I have seen that will beat the HP 5065. There is also a lot of published data on them.

Bob

On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote:

Tom,

Chris,

The HP 5065A is one of the best Rb ever made.

/tvb (iPhone4)

Have you or any other list member had the opportunity to take measurements
on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)?

http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf

--

Björn

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

How do the older Efratom FRK series fair compared to the 5065A? Robert G8RPI. ________________________________ From: Bob Camp <lists@rtty.us> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Sent: Monday, 2 July 2012, 20:48 Subject: Re: [time-nuts] HP-5065a advise and purchase decision Hi Yes, I have poked at the early ones (1980's). They are the only thing I have seen that will beat the HP 5065. There is also a lot of published data on them. Bob On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote: > Tom, > >> Chris, >> >> The HP 5065A is one of the best Rb ever made. >> >> /tvb (iPhone4) > > Have you or any other list member had the opportunity to take measurements > on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)? > > http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf > > -- > > Björn > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

BC

Bob Camp

Mon, Jul 2, 2012 8:54 PM

Hi

The FRK's (of any era) are not quite as good as a properly running 5065A on short term stability.

Bob

On Jul 2, 2012, at 4:45 PM, Robert Atkinson wrote:

How do the older Efratom FRK series fair compared to the 5065A?

Robert G8RPI.

From: Bob Camp lists@rtty.us
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Monday, 2 July 2012, 20:48
Subject: Re: [time-nuts] HP-5065a advise and purchase decision

Hi

Yes, I have poked at the early ones (1980's). They are the only thing I have seen that will beat the HP 5065. There is also a lot of published data on them.

Bob

On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote:

Tom,

Chris,

The HP 5065A is one of the best Rb ever made.

/tvb (iPhone4)

Have you or any other list member had the opportunity to take measurements
on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)?

http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf

--

 Björn

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi The FRK's (of any era) are not quite as good as a properly running 5065A on short term stability. Bob On Jul 2, 2012, at 4:45 PM, Robert Atkinson wrote: > How do the older Efratom FRK series fair compared to the 5065A? > > > Robert G8RPI. > > > > ________________________________ > From: Bob Camp <lists@rtty.us> > To: Discussion of precise time and frequency measurement <time-nuts@febo.com> > Sent: Monday, 2 July 2012, 20:48 > Subject: Re: [time-nuts] HP-5065a advise and purchase decision > > Hi > > Yes, I have poked at the early ones (1980's). They are the only thing I have seen that will beat the HP 5065. There is also a lot of published data on them. > > Bob > > On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote: > >> Tom, >> >>> Chris, >>> >>> The HP 5065A is one of the best Rb ever made. >>> >>> /tvb (iPhone4) >> >> Have you or any other list member had the opportunity to take measurements >> on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)? >> >> http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf >> >> -- >> >> Björn >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

RW

Ron Ward

Tue, Jul 3, 2012 7:02 AM

Hi, I am new here.
Are the Rubidium cell AND Rubidium Lamp still available either from
HP/Agilant or another source? I am thinking of buying a HP-5065A and it
would be nice if these critical parts were still available!
Thanks,
Ron

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Bob Camp
Sent: Monday, July 02, 2012 12:48 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP-5065a advise and purchase decision

Hi

Yes, I have poked at the early ones (1980's). They are the only thing I
have seen that will beat the HP 5065. There is also a lot of published
data on them.

Bob

On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote:

Tom,

Chris,

The HP 5065A is one of the best Rb ever made.

/tvb (iPhone4)

Have you or any other list member had the opportunity to take

measurements

on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)?

http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf

--

Björn

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to

https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

and follow the instructions there.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi, I am new here. Are the Rubidium cell AND Rubidium Lamp still available either from HP/Agilant or another source? I am thinking of buying a HP-5065A and it would be nice if these critical parts were still available! Thanks, Ron -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Bob Camp Sent: Monday, July 02, 2012 12:48 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] HP-5065a advise and purchase decision Hi Yes, I have poked at the early ones (1980's). They are the only thing I have seen that will beat the HP 5065. There is also a lot of published data on them. Bob On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote: > Tom, > >> Chris, >> >> The HP 5065A is one of the best Rb ever made. >> >> /tvb (iPhone4) > > Have you or any other list member had the opportunity to take measurements > on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)? > > http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf > > -- > > Björn > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

MD

Magnus Danielson

Tue, Jul 3, 2012 8:11 AM

On 07/03/2012 09:02 AM, Ron Ward wrote:

Hi, I am new here.
Are the Rubidium cell AND Rubidium Lamp still available either from
HP/Agilant or another source? I am thinking of buying a HP-5065A and it
would be nice if these critical parts were still available!

They are not the parts that fails typically. If needed, they seems to be
available here.

Powersupplies typically fail.

Cheers,
Magnus

On 07/03/2012 09:02 AM, Ron Ward wrote: > Hi, I am new here. > Are the Rubidium cell AND Rubidium Lamp still available either from > HP/Agilant or another source? I am thinking of buying a HP-5065A and it > would be nice if these critical parts were still available! They are not the parts that fails typically. If needed, they seems to be available here. Powersupplies typically fail. Cheers, Magnus

BC

Bob Camp

Tue, Jul 3, 2012 11:08 AM

Hi

The cells only fail if you drop and break them. The lamps can wear out, but generally don't. The lamps can be found. The power transformer in any of these old beasts is the part that I worry about. Both HP and Tek used very conservative design rules on their transformers, they normally last a long time.

Bob

On Jul 3, 2012, at 3:02 AM, Ron Ward wrote:

Hi, I am new here.
Are the Rubidium cell AND Rubidium Lamp still available either from
HP/Agilant or another source? I am thinking of buying a HP-5065A and it
would be nice if these critical parts were still available!
Thanks,
Ron

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Bob Camp
Sent: Monday, July 02, 2012 12:48 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP-5065a advise and purchase decision

Hi

Yes, I have poked at the early ones (1980's). They are the only thing I
have seen that will beat the HP 5065. There is also a lot of published
data on them.

Bob

On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote:

Tom,

Chris,

The HP 5065A is one of the best Rb ever made.

/tvb (iPhone4)

Have you or any other list member had the opportunity to take

measurements

on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)?

http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf

--

Björn

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to

https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

and follow the instructions there.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi The cells only fail if you drop and break them. The lamps can wear out, but generally don't. The lamps can be found. The power transformer in any of these old beasts is the part that I worry about. Both HP and Tek used very conservative design rules on their transformers, they normally last a long time. Bob On Jul 3, 2012, at 3:02 AM, Ron Ward wrote: > Hi, I am new here. > Are the Rubidium cell AND Rubidium Lamp still available either from > HP/Agilant or another source? I am thinking of buying a HP-5065A and it > would be nice if these critical parts were still available! > Thanks, > Ron > > > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On > Behalf Of Bob Camp > Sent: Monday, July 02, 2012 12:48 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] HP-5065a advise and purchase decision > > Hi > > Yes, I have poked at the early ones (1980's). They are the only thing I > have seen that will beat the HP 5065. There is also a lot of published > data on them. > > Bob > > On Jul 1, 2012, at 5:43 PM, bg@lysator.liu.se wrote: > >> Tom, >> >>> Chris, >>> >>> The HP 5065A is one of the best Rb ever made. >>> >>> /tvb (iPhone4) >> >> Have you or any other list member had the opportunity to take > measurements >> on the ElmerPerkin/EG&G Space rubidiums (in a lab environment)? >> >> http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf >> >> -- >> >> Björn >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

time-nuts@lists.febo.com

HP-5065a advise and purchase decision

Cheers, David

Cheers,
David